Frontier Airlines is offering flights today for $20 — but you have to act fast

Frontier is giving travelers access to flights for $29, or for as low as $20 in some cases.

The deal, which includes destinations like Austin, San Francisco, and Orlando, is here for a limited time only.

Here's how you can access the discount and travel domestically through Frontier, including the possible catch.

Frontier Airlines is now offering flights for the same amount of money as going out to eat or grabbing drinks on a Friday night. If your New Year's resolution was to travel more and/or spend less, this just might be your ticket, literally.

There is a catch. To get the $20 deal, you must be a member of Frontier's "Discount Den," a club that allows members to have access to discounts after paying an annual fee of $49.99. But without the membership, you can still get flights for as little as $29. But you should remember that Frontier may charge extra for certain amenities (checked bags or carry-ons, seating, etc.).

Photo by Lian Jonkman on Unsplash

In order to get the cheapest prices, travelers must book their flights no later than Wednesday. A seven-day advance purchase is required. The departures for the trip are valid from January 16 to February 14. Availability on the deal and for different destinations is also limited, so consider all of this a perfect storm for a spontaneous, last-minute trip.